DE69803874T2 - Bleichen von chemischem zellstoff und behandlung mit einem komplexbildner - Google Patents

Bleichen von chemischem zellstoff und behandlung mit einem komplexbildner

Info

Publication number
DE69803874T2
DE69803874T2 DE69803874T DE69803874T DE69803874T2 DE 69803874 T2 DE69803874 T2 DE 69803874T2 DE 69803874 T DE69803874 T DE 69803874T DE 69803874 T DE69803874 T DE 69803874T DE 69803874 T2 DE69803874 T2 DE 69803874T2
Authority
DE
Germany
Prior art keywords
pulp
dicarboxylethoxy
ethyl
chlorine dioxide
treating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
DE69803874T
Other languages
German (de)
English (en)
Other versions
DE69803874D1 (de
Inventor
Jukka Jaekaerae
Reijo Aksela
Aarto Paren
Ilkka Renvall
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kemira Oyj
Original Assignee
KEMIRA CHEMICALS HELSINKI Oy
Kemira Chemicals Oy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by KEMIRA CHEMICALS HELSINKI Oy, Kemira Chemicals Oy filed Critical KEMIRA CHEMICALS HELSINKI Oy
Application granted granted Critical
Publication of DE69803874D1 publication Critical patent/DE69803874D1/de
Publication of DE69803874T2 publication Critical patent/DE69803874T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/16—Bleaching ; Apparatus therefor with per compounds
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/1026—Other features in bleaching processes
    • D21C9/1042—Use of chelating agents
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/1057—Multistage, with compounds cited in more than one sub-group D21C9/10, D21C9/12, D21C9/16
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/10—Bleaching ; Apparatus therefor
    • D21C9/12—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds
    • D21C9/14—Bleaching ; Apparatus therefor with halogens or halogen-containing compounds with ClO2 or chlorites

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)
  • Detergent Compositions (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Materials For Medical Uses (AREA)
DE69803874T 1997-11-13 1998-11-13 Bleichen von chemischem zellstoff und behandlung mit einem komplexbildner Expired - Lifetime DE69803874T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI974221A FI105214B (fi) 1997-11-13 1997-11-13 Tehostettu kemiallisen massan valkaisumenetelmä
PCT/FI1998/000887 WO1999025919A1 (fi) 1997-11-13 1998-11-13 Enhanced process for the bleaching of chemical pulp_____________

Publications (2)

Publication Number Publication Date
DE69803874D1 DE69803874D1 (de) 2002-03-21
DE69803874T2 true DE69803874T2 (de) 2002-08-29

Family

ID=8549932

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69803874T Expired - Lifetime DE69803874T2 (de) 1997-11-13 1998-11-13 Bleichen von chemischem zellstoff und behandlung mit einem komplexbildner

Country Status (11)

Country Link
US (1) US6331192B1 (fi)
EP (1) EP1030943B1 (fi)
AT (1) ATE213290T1 (fi)
AU (1) AU1236599A (fi)
CA (1) CA2310038C (fi)
DE (1) DE69803874T2 (fi)
ES (1) ES2172240T3 (fi)
FI (1) FI105214B (fi)
ID (1) ID25541A (fi)
PT (1) PT1030943E (fi)
WO (1) WO1999025919A1 (fi)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI106258B (fi) 1998-03-09 2000-12-29 Kemira Chemicals Oy Menetelmiä N-bis-[2-(1,2-dikarboksi-etoksi)-etyyli]amiinijohdannaisen valmistamiseksi sekä menetelmien tuotteet ja niiden käytöt
DE60020318T2 (de) * 1999-09-03 2006-05-18 Nippon Shokubai Co., Ltd. Zusammensetzung von Aminosäure-Derivaten und Verfahren zur Herstellung von einem Aminosäure-Derivat
FI123102B (fi) * 2006-03-31 2012-11-15 Laennen Tutkimus Western Res Inc Oy Kemiallisen massan valkaisumenetelmä
FI122626B (fi) * 2006-03-31 2012-04-30 Laennen Tutkimus Western Res Inc Oy Kemiallisen massan valkaisumenetelmä
ES2456271T3 (es) 2008-06-20 2014-04-21 International Paper Company Composición y hoja de registro con propiedades ópticas mejoradas
FI123926B (fi) 2012-04-03 2013-12-13 Upm Kymmene Corp Menetelmä sellun valkaisemiseksi
CN104294613B (zh) * 2014-08-08 2019-08-30 广东羽威农业集团有限公司 一种高蓬松度的纯白抗菌羽绒及其制备方法
WO2016159403A1 (ko) * 2015-03-30 2016-10-06 주식회사 아시아모빌 킬레이트 화합물을 이용한 펄프 표백방법
FI128968B (fi) 2020-03-31 2021-04-15 Chempolis Oy Selluloosamassan peroksidivalkaisu

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4340043A1 (de) * 1993-11-24 1995-06-01 Henkel Kgaa Verwendung Stickstoff-haltiger Komplexbildner bei der Holzstoffbleiche
SE502706E (sv) * 1994-04-05 1999-06-18 Mo Och Domsjoe Ab Framställnng av blekt cellulosamassa genom blekning med klordioxid och behandling av komplexbildare i samma steg
CA2173824A1 (en) * 1995-04-27 1996-10-28 Brian A. Parker Ethylenediaminetriacetic acid and salts thereof as chelating agents in pulp bleaching
FI112075B (fi) * 1996-05-30 2003-10-31 Kemira Chemicals Oy N-bis- tai N-tris-[(1,2-dikarboksyyli-etoksi)-etyyli]amiinijohdannaiset, niiden valmistus ja käyttö
FI104572B (fi) * 1996-05-30 2000-02-29 Kemira Chemicals Oy Menetelmä kemiallisen massan valkaisemiseksi

Also Published As

Publication number Publication date
EP1030943B1 (en) 2002-02-13
ID25541A (id) 2000-10-12
CA2310038C (en) 2008-01-15
ES2172240T3 (es) 2002-09-16
CA2310038A1 (en) 1999-05-27
FI105214B (fi) 2000-06-30
WO1999025919A1 (fi) 1999-05-27
AU1236599A (en) 1999-06-07
EP1030943A1 (en) 2000-08-30
FI974221A (fi) 1999-05-14
ATE213290T1 (de) 2002-02-15
PT1030943E (pt) 2002-07-31
US6331192B1 (en) 2001-12-18
FI974221A0 (fi) 1997-11-13
DE69803874D1 (de) 2002-03-21

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: KEMIRA OYJ, HELSINKI, FI